I suspect you've never known anyone who participates in the elite levels of popular sports. They are very rarely having fun.
All the major sports alter their rules every year to increase their entertainment value. Here is a short, non-exhaustive list off the top of my head: NBA flopping penalties, NBA player resting policy, MLB base stealing rule changes, MLB free base runners, MLB pitch clocks, NFL changing overtime rules almost every year, NFL challenges and reviews, etc.
There is nothing wrong with not having much knowledge of sports, but it might be worth reconsidering your strident opinions if that's the case.
I've actually even played sports against ex-elite players in the sports they were once among the best in the world in, although it was pretty obvious I had no chance. I've also played other sports with friends who were professional ice hockey players and professional association football players. I think what characterizes them is that they once at a time really hated losing, and you can question whether that is 'having fun' but I do think they were having fun at one point too.
But I agree that sports at the elite level aren't about health. It's not unusual to be doing things that at least risk injury.
I think these kinds of rule changes are destructive though. They certainly are in tennis.
All the major sports alter their rules every year to increase their entertainment value. Here is a short, non-exhaustive list off the top of my head: NBA flopping penalties, NBA player resting policy, MLB base stealing rule changes, MLB free base runners, MLB pitch clocks, NFL changing overtime rules almost every year, NFL challenges and reviews, etc.
There is nothing wrong with not having much knowledge of sports, but it might be worth reconsidering your strident opinions if that's the case.